
In this Dec. 27, 2012, photo visitor Savo Duvnjak smashes furniture and other household items during a demolishing session at the Rage Room, in Novi Sad, Serbia. (AP Photo/Darko Vojinovic)

In this Dec. 27, 2012, photo visitor Savo Duvnjak smashes furniture and other household items during a demolishing session at the Rage Room, in Novi Sad, Serbia. (AP Photo/Darko Vojinovic)

Serbia's Novak Djokovic makes a forehand return to Ryan Harrison of the US during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 16, 2013. (AP Photo/Rob Griffith)

Serbia's Novak Djokovic makes a forehand return to Ryan Harrison of the US during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 16, 2013. (AP Photo/Rob Griffith)

Serbia's Novak Djokovic hits a forehand return to France's Paul-Henri Mathieu during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 14, 2013. (AP Photo/Andrew Brownbill)

Serbia's Novak Djokovic hits a forehand return to France's Paul-Henri Mathieu during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 14, 2013. (AP Photo/Andrew Brownbill)

Serbia's Novak Djokovic and Serena Williams of the US perform the gangnam style dance during the Kids Tennis Day at Melbourne Park ahead of the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 12, 2013. (AP Photo/Andy Wong)

Serbia's Novak Djokovic and Serena Williams of the US perform the gangnam style dance during the Kids Tennis Day at Melbourne Park ahead of the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 12, 2013. (AP Photo/Andy Wong)

** FILE ** Branislav Milinkovic, Serbia's ambassador to NATO, is pictured at the alliance's headquarters in Brussels in 2006. (AP Photo/NATO)